Grain-separating apparatus



(No Model.)-

L. A. SIMONS.

GRAIN SEPARATING APPARATUS.

Patented Feb. 17, 1891.

WIM/8858:

UNITED STATES PATENT OFFICE.

LEVI AARON SIMONS, OE OMAHA, NEBRASKA.

GRAIN-SEPARATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 446,794, dated February 17, 1891.

Application filed September 17, 1890. Serial No. 365,228. (No model.)

To all whom t may concern:

Be it known that I, LEVI AARON SIMoNs, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska., have invented certain new and useful Improvements in Grain-Separating Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to grain-separating machines, and has for its object to increase the emciency of this class of machines and at the same time provide means for controlling the direction and the force of the wind between the separating-screens.

The improvement consists of the novel features and the peculiar construction and combination of the parts which will be hereinafter more fully described and claimed, and which are shown in the annexed drawings, in which- Figure l is a perspective View, parts being broken away, ot' the separating-screens. Eig. 2 is a longitudinal section showing the adj ustinent of the wind de'flector and the lower screen by dotted lines. Fig. 3 is a cross-section on the line x oc of Fig. 2, looking to the left.

In the drawings I have shown the separating-screen only; but it will be understood that the same is to be applied to any of the wellknown forms of separating mechanism which are provided with a fan-blower and a dustconveyor.

The frame A, which may be of any length and width, according to the nature o' the machine, is covered with alternate metallic plates and wire-cloths. For simplicity of illustration I have shown two plates E and E and an intermediate wire-cloth E2. To the under side of frame A and atthe rear end thereof is attached two trapezoidal-shaped boards B B. A short separating-screen D is held between the lower ends of boards B B, being mounted midway of its ends on pivots 2 2, which are binding-screws, and pass through the sides of the boards B B. Between the screens A and D is placed the wind-director C, the lower edge thereof coming about two inches above the lower screen D. This wind director C is mounted at its ends on the binding-screws l l, and is adapted to be turned thereon to any desired angle or to a vertical position, so as to close the air-space at the rear end and torce the air directly upward through the wirecloth and the grain thereon. By loosening the binding-screws l l the wind-director can be turned on the same,and when adjusted to the required position is held in such position by retightening the said screws l l.

In the operation of the invention the grain is spread out on the plate E before it reaches the wire-cloth, the meshes of which must be large enough to let the heavier grain go through easily to the screen D. The wind, passing vertically through the Wire-cloth, carries off all dust, chaff, and light dirt into a dust box or conveyer (not shown) of ordinary construction and arrangement. The smaller grain, which falls upon the screen D,is a second time separated and the grain is discharged into a separate receptacle. The coarse grainsuch as oats, chess, he-are borne up bythe wind and carried over the lower end of the screen A and discharged outside of t-he mill.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 'is-` The hereinbefore shown and described grain-separator, composed ofthe frame A, having metal plates E and E, and havingthe wirecloth E2, intermediate of the metal plates E and E', the trapezoidal boards B B, depending from the lower rear side of the frame A, the tilting screen D below the frame, the binding-screws 2 2, passing through the boards B B and forming pivots for the screen D to tilt on, the rotatable wind-deector C between the screen D and the plate E', and the binding-screw l l for the Wilid-delector to turn on and for holding itin the required position, substantially as described.

In testimony whereof I affix my si gnatu re in presence .of two witnesses.

LEVI AARON SIMONS.

Witnesses:

ANDREW MILES, J. T. PATCH. 

